Adapter for electric lamp sockets



May 18 1926.

A. C. RECKER ADAPTER FOR ELECTRIC LAMP socxms Filed April 5, 1924Patented May 13, 1926,

ADOLPH C. BECKER, OF \VATERTONN, CONNECTICUT. ASSIGNOB TO CHASE PANIES,INQ, OF VJA'IERBURY,

hSdSdd PATENT FFICE.

CONNECTICU'I, A CORPORATION.

ADAPTER FOR ELECTRIC-LATE? SOCKETS.

Application filed April 5,

Fig. 1 is a View in side elevation of my improved adapter, asconstructed for use with miniaturebulbs, shown on the double scale.

Fig. 2 is a plan View thereof.

Fig. 3 is a view thereof in central section, showing it as applied to astandard socket of the Edison type, shown in broken lines.

Fig. i is a view in central section of a modified form of my improvedadapter, shown as designed for use with candelabra bulbs.

My invention relates to an improved adapter for electric lamp-sockets,the object being to provide, at a low cost for manufacture, simple,convenient and effective means, whereby a standard lamp-socket of theEdison type may be adapted or converted for use with bulbs having smallstems, such as the so-called candelabra and min iature bulbs.

W ith these ends in view, my invention consists in an adapter forelectric lampsockets having certain details of construction andcombinations of parts as will be hereinafter described and particularlypointed out in the claim.

In carrying out my invention, as herein shown, I employ a screw-shell 5having standard screw-threads to lit alamp-socket ot the Edison type andhaving its upper edge turned inwardly to form a reflector 6, the edge ofwhich has clamped upon itthe outer end of a concentric sheet-metal shell7 threaded to correspond to the threads of the stem of a miniature bulb,and therefore considerably smaller in diameter than the screw-shell 5within which the smaller shell 7 may be said to be suspended. At its1924. Serial noj'roeasi.

inner end, the smaller shell 7 mounts an insulating disk 8 carrying acentrally-arranged contact-stem 9 adapted in length to engage with thecenter-contact 10 ot' the socket 11 of a standard socket of the Edi sontype, the said contact and socket being shown by broken lines.

W hen the miniature bulb has its stein screwed into the inner shell 7,it is in electrical connection with the outer shell 5, while the bulbscenter-contact is in electrical con nection with the center-contact ot'the socket 11 through the stud 9.

In the modification shown by Fig. 4, the screw-shell 5 is formed with aflange 12 turned inwardly at a right angle and having superimposed uponit a flanged disk 13 of insulating material held in place by crimpingupon it at 14: the outer end of a concentrically-ar 'anged inner shell15, adapted in size and threading to correspond to the size andthreading of a so-called candelabra bulb. In this case, the adapter isscrewed into and out of the standard socket by grasping the flanged edgeof the insulating disk 13, whereby the user is protected against shock.

I claim:

In an adapter for electrical lamp-sockets, the combination with athreaded shell, pro vided at one end with a reflector, of a smallerinner shell supported by the said reflector concentrically within theouter shell, and a contact-stem mounted in the opposite end of she innershell and insulated therefrom.

In testimony whereof, I have signed this specification.

'AJJOLPH o. BECKER.

